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arXiv · 0808.2574

A Better Way to Reconstruct Dark Energy Models ?

A. Sil·S. Som
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Abstract

To reconstruct dark energy models the redshift $z_{eq}$, marking the end of radiation era and the beginning of matter-dominated era, can play a role as important as $z_{t}$, the redshift at which deceleration parameter experiences a signature flip. To implement the idea we propose a variable equation of state for matter that can bring a smooth transition from radiation to matter-dominated era in a single model. A popular $Λ\propto ρ$ dark energy model is chosen for demonstration but found to be unacceptable. An alternative $Λ\propto ρa^{3}$ model is proposed and found to be more close to observation.

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A. Sil, S. Som. 2008-08-19. A Better Way to Reconstruct Dark Energy Models ?. https://doi.org/10.1007/s10509-008-9892-6

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